sna: Detect available instruction sets at runtime

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 14 insertions, 0 deletions

diff --git a/src/sna/sna.h b/src/sna/sna.h
index f6e89ecd..77a52bdd 100644
--- a/src/sna/sna.h
+++ b/src/sna/sna.h
@@ -207,6 +207,18 @@ struct sna {
 #define SNA_TEAR_FREE		0x10
 #define SNA_FORCE_SHADOW	0x20
 
+	unsigned cpu_features;
+#define MMX 0x1
+#define SSE 0x2
+#define SSE2 0x4
+#define SSE3 0x8
+#define SSSE3 0x10
+#define SSE4a 0x20
+#define SSE4_1 0x40
+#define SSE4_2 0x80
+#define AVX 0x100
+#define AVX2 0x200
+
 	unsigned watch_flush;
 
 	struct timeval timer_tv;
@@ -855,6 +867,8 @@ inline static bool is_clipped(const RegionRec *r,
 		r->extents.y2 - r->extents.y1 != d->height);
 }
 
+unsigned sna_cpu_detect(void);
+
 void sna_threads_init(void);
 int sna_use_threads (int width, int height, int threshold);
 void sna_threads_run(void (*func)(void *arg), void *arg);